PollutionCurve = function (pointlist, curvecolor) 
{
	this.createGeometry = function()
	{
		var geometrySpline = new THREE.Geometry();
		var curve = new THREE.CatmullRomCurve3(pointlist);
		geometrySpline.vertices = curve.getPoints( 10);

		var line = new THREE.Line( geometrySpline, new THREE.LineDashedMaterial( { color: curvecolor, linewidth: 5 } ) );

		return line;
	}

};
